*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'poppins', sans-serif;
  font-weight: bold;
}
body{
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #000;
}
.calculator{
  padding: 20px;
  border: 2px solid #f2f2f2;
  border-radius: 16px;
  box-shadow: 0px 3px 15px yellow;
  background: rgba(0, 0, 0, 0.2);
}
input{
  width: 320px;
  padding: 24px;
  margin: 10px;
  background: rgba(255, 255, 255, 0.3);
  box-shadow: inset 0px 0px 8px rgba(0, 0, 0, 0.4);
  font-size: 58px;
  text-align: right;
  color: #fff;
  border: 2px solid rgba(0, 0, 0, 0.2);
  border-radius: 16px;
  text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.2);
}
input::placehoder{
  color: #fff;
}
button{
  width: 60px;
  height: 60px;
  margin: 10px;
  color:#000;
  font-size: 24px;
  cursor: pointer;
  border: solid 1px white;
  border-radius: 25px;
  text-shadow: 0px 1px 5px rgba(0, 0, 0, 0.2);
  box-shadow: -1px 2px 10px yellow;
}
.ac, .del{
  font-size: 20px;
}
button:hover{
  color: #fff;
  background: orangered;
}
.equalBtn{
  background: orangered;
  width: 150px;
  font-size: 25px;
}
.operator{
  color: orangered;
}